| Name | CVE-2020-15025 |
| Description | ntpd in ntp 4.2.8 before 4.2.8p15 and 4.3.x before 4.3.101 allows remote attackers to cause a denial of service (memory consumption) by sending packets, because memory is not freed in situations where a CMAC key is used and associated with a CMAC algorithm in the ntp.keys file. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 963807 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| ntp (PTS) | buster | 1:4.2.8p12+dfsg-4 | vulnerable |
| bullseye | 1:4.2.8p15+dfsg-1 | fixed |
| ntpsec (PTS) | buster | 1.1.3+dfsg1-2+deb10u1 | fixed |
| bullseye | 1.2.0+dfsg1-4 | fixed |
| bookworm, bookworm (security) | 1.2.2+dfsg1-1+deb12u1 | fixed |
| trixie | 1.2.2+dfsg1-4 | fixed |
| sid | 1.2.3+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| ntp | source | jessie | (not affected) | | | |
| ntp | source | stretch | (not affected) | | | |
| ntp | source | (unstable) | 1:4.2.8p15-1 | low | | 963807 |
| ntpsec | source | (unstable) | (not affected) | | | |
Notes
[buster] - ntp <no-dsa> (Minor issue)
[stretch] - ntp <not-affected> (Vulnerable code introduced later)
[jessie] - ntp <not-affected> (Vulnerable code introduced later)
- ntpsec <not-affected> (Vulnerable code not present)
https://support.ntp.org/bin/view/Main/NtpBug3661
https://support.ntp.org/bin/view/Main/SecurityNotice#June_2020_ntp_4_2_8p15_NTP_Relea
https://bugs.ntp.org/show_bug.cgi?id=3661
http://bk.ntp.org/ntp-stable/?PAGE=patch&REV=5e84aa07N2NcL4sE_0dW35Tizc74SA